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Show 328 PROF. E. C. STIRLING ON NOTORYCTES TYPHLOPS. [June 2, 4 mm., ending very bluntly ; the fifth is very slightly shorter than the fourth, broad at the base (8 m m . ) , tapering rapidly to a blunt point, the two together forming an outline rather like that of a goose-mussel (Lepas). The nails of the third, second, and first digits, very much smaller, form a series gradually diminishing in size in the order named, and constitute a second row on the inside of the fourth and fifth, by which, as stated, they are completely concealed from view. What corresponds to the palm is the cleft between the two rows of digits. " The hind limbs are also short, with the soles turned outwards. Outline of Notoryctes typhlops. What appears to be the fifth (anterior) digit is very short, with a short, broad, and strong nail; the fourth is armed with a long (7 mm.), narrow, curved, and sharp claw ; while the claws of the third, second, and first are broad, flat, rounded at their points, and joined together by a membrane which extends nearly to their points. On the sole there is a hard, elongated, horny tubercle crossing it transversely. "The tail 2 cm. long, and 5 m m . wide at the insertion, tapers to 3 m m . and terminates in a knob-like tip. "About 15 m m . in front of the vent (? cloaca) there is a pouch in the integument about 4 m m . wide, with the opening directed backwards and having a depth in a forward direction of from 4-5 mm. The surface of this pouch is devoid of hair, but the bare area is surrounded by thick fawn-coloured fur, with a slightly reddish tint; it is possible, however, that this reddish tint is due wholly or in part to some ferruginous-looking sand which is much mixed up with the fur. The body generally, with the exception of the lower two-thirds of the tail, which is bare, is covered with fur of a rather lighter tint. " With regard to the internal parts, it is unfortunate that the specimen came to us completely eviscerated and in a bad state of preservation generally ; but in a small part of the lower bowel which was left, remains of ants were found. The bowel terminates at a wide vent (? cloaca), and I can find no trace of a separate genital aperture, nor of such openings into the supposed cloaca. I have not yet had time to examine with minuteness the skeleton, which |